Renal angiomyolipomas (AMLs) are benign renal tumors that may possess the features of a malignant neoplasm, such as local and vascular invasion. We describe the diagnosis and management of a rare case of AML associated with tumor thrombus extending into the right atrium.

Some changes and details of the last WHO liver tumors classification (2019) in comparison with the previous WHO classification (2010) are being discussed. Using different methods of investigations allow us to get better understanding of pathologic processes and their evolution. It is highly recommended to use WHO classification of tumours. 5th Edition. Digestive System Tumours. Еdited by the WHO Classification of Tumours Editorial Board. Lyon, IARC Press, 2019 in everyday clinical practice and scientific activity.

We present the very rare clinical case of a 54-year-old man who was diagnosed on CT and MRI with a mixed cystic-soft tissue pancreatic lesion with septa and calcification, looking like a malignant tumor of pancreas. The preoperative diagnosis was uncertain because of unclear features of the mass. This tumor from the body and tail of pancreas was excised by means of laparotomy. The final diagnosis of a complicated hydatid cyst was confirmed on morphological examination.

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